Malicious PDF — malware analysis report

Static analysis result for SHA-256 106a552962706e37…

MALICIOUS

PDF

49.1 KB Created: 2020-08-22 12:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e30f3da5c3477f87342c5215ca64def SHA-1: 96f0a4009de595a5eaa1d979352f79fae45924d2 SHA-256: 106a552962706e3769f075731c54ca12edd0434f676c95403753e5038836461e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic 'SE_MFA_LURE' indicates the document likely attempts to harvest credentials or session tokens by mimicking a multi-factor authentication prompt. The presence of many external PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=apogee+ensemble+maestro+manual
    • http://kerusuw.2ndusss.com/uploads/1/3/0/7/130739615/mijikip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/tixorojepuxiku.pdf
    • https://cdn.shopify.com/s/files/1/0428/5559/6198/files/sodedovivegafojavapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/14158768525.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/xujuxazegamapaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/catholic_answers_eucharistic_miracles.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/gungeon_wood_beam.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/53846328008.pdf
    • https://cdn.shopify.com/s/files/1/0464/8914/1416/files/making_book_folding_templates.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/4150329402.pdf
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/zivufafof.pdf
    • https://cdn.shopify.com/s/files/1/0447/3955/9573/files/nervio_glosofaringeo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082b1.bin
d44237c2487e125e533000ac8a06f5d0e3be7d4861fd89885a2b914f915294b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B1 5268 bytes
font_01_sfnt_off00009482.bin
2dfe165ef1e816a08598bc0451bde20ab762bda67a21f4750c223ef3527b2bc0
pdf-font-stream PDF embedded font (sfnt) at offset 0x9482 10392 bytes